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Find the difference (m - 3) - (-m + 12)

User StatiX
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Whenever there is a negative sign in from of some terms in parenthesis, we negate all the terms inside it.

+ becomes -

- becomes +

Thus, we can simplify the expression as:


\begin{gathered} (m-3)-(-m+12) \\ =(m-3)+m-12 \end{gathered}

The parenthesis around 'm - 3' isn't required.


m-3+m-12

Now, we fully simplify it by adding up the m's [variables] and the numbers.

Thus, we have:


\begin{gathered} m+m-3-12 \\ 2m-15 \end{gathered}

The fully simplified form:


2m-15

User Antot
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